In Knox County, reported chlamydia cases run about 32% lower than the US average. For routine screening or your first test in Henderson, Illinois, consider whether you prefer the lower cost of public clinics, the faster results from private labs, or the convenience of at-home kits. A list of options is below.
Available testing centers
7 testing options are listed for Henderson, IL. The nearest, St Mary Medical Center, is about 2.5 miles away. Compare community and public clinics, private labs, and at-home kits below.
Listings tagged Community health center are federally funded health centers and rural clinics that treat everyone regardless of insurance or ability to pay: required to bill on a sliding fee scale and provide confidential care, and in many states minors may consent to their own STI testing. A Title X tag flags centers funded for confidential family-planning services; confirm current participation when you call.
Source: CMS FQHC & Rural Health Clinic enrollment files (data.cms.gov), refreshed quarterly. Title X status reflects the latest OPA grantee list.
A community safety-net rural health clinic about 3 miles from Henderson. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
A safety-net rural health clinic about 4 miles from Henderson. Sliding-scale STD testing and care are typical here, call ahead to confirm the exact panel and pricing.
Tests offered
Knox County Health Department in Galesburg pairs testing for HIV, syphilis, gonorrhea, chlamydia, and hepatitis C with same-visit treatment for bacterial STIs, all on a sliding-scale fee accepted alongside Medicaid and insurance: appointments required, and care is available in Spanish.
Gonorrhea, chlamydia, syphilis, and HIV make up the floor at most sexual health clinics. Hepatitis C rarely joins them. Knox County Health Department runs a rapid hepatitis C test as part of its standard panel, which means a condition that often advances silently gets caught in the same appointment.
Knox County Health Department writes PrEP prescriptions directly, meaning daily oral tenofovir-based regimens are initiated and monitored here rather than requiring a separate provider relationship. PEP is also available, keeping both prevention options anchored to one clinical team.
For someone without a regular provider who needs to discuss PrEP eligibility, treatment options, or a reactive result in Spanish, Knox County Health Department delivers that conversation directly. No intermediary, no delayed comprehension. Spanish-language care is a standing service, not a workaround.
Languages
English, Spanish
Tests offered
Serves
Care services
Prevention services
Fees & payment
Listing verified Feb 2026 · Source: CDC NPIN + HRSA
Free tool · not a clinic
Testing too soon can miss an infection. Enter the date of possible exposure to see the earliest a test can reliably detect each STI.
| Infection | Earliest reliable test | Conclusive after |
|---|---|---|
| Chlamydia | 7 days after exposure | 14 days after exposure |
| Gonorrhea | 7 days after exposure | 14 days after exposure |
| Trichomoniasis | 7 days after exposure | 28 days after exposure |
| HIV (NAT / RNA) | 10 days after exposure | 33 days after exposure |
| HIV (4th-gen Ag/Ab) | 18 days after exposure | 45 days after exposure |
| HIV (antibody) | 21 days after exposure | 84 days after exposure |
| Syphilis | 21 days after exposure | 42 days after exposure |
| Hepatitis B | 21 days after exposure | 42 days after exposure |
| Hepatitis C | 56 days after exposure | 77 days after exposure |
| Herpes (HSV) | 28 days after exposure | 112 days after exposure |
Guidance only, confirm timing with a clinician. A negative result before the conclusive date may need a repeat test.
Typical out-of-pocket ranges by option, actual cost depends on which tests you need.
Public / community clinic
Free HIV testing is common
Private lab (self-pay)
Never billed to insurance
At-home kit
Mailed to your door, private
Doctor / urgent care
Often $0 preventive with insurance
No centers match those filters. Clear the service-type filter or the opening-hours filters to see every center.
Every other option
Beyond the dedicated testing centers above: at-home kits by mail, hospital labs certified for STI testing, local clinicians who can order a panel during a regular visit, pharmacies for self-test kits and prescriptions, and online PrEP & treatment.
Test from home
The nearest testing center is about 3 miles away; if you'd rather skip the trip, an at-home kit ships to Henderson, you collect the sample privately, and mail it back to a CLIA-certified lab. Results come online in days, with a clinician available if anything is positive. Same labs as a clinic, no waiting room, and you can read how accurate at-home STD tests are before you order.
Want a free option first? The CDC-supported TakeMeHome (opens in a new tab) program mails free at-home HIV self-test kits, and, in many areas, free STI kits, to your door, with no insurance or payment needed. The paid kits below add broader panels and faster turnaround.
In-home collection
$79 & up
Best value: single tests
$49 & up
Best range: couples & full panels
$79 & up
Every kit uses CLIA-certified labs. At-home testing is for screening; a reactive result should be confirmed and treated by a clinician. Prices and panels shown are illustrative and change often, confirm current details on the provider's site.
Also in the area
Beyond the public testing sites above, these federally certified (CLIA) labs serve Knox County, each lab's town is shown on its card below. Many test through a doctor's order or by appointment rather than walk-in, so call ahead to confirm STD/STI testing and availability before visiting.
3333 North Seminary Street, Galesburg, IL 61401
CMS-certified lab Accredited · College of American Pathologists
1090 West Carl Sandburg Drive, Galesburg, IL 61401
CMS-certified lab Accredited · Joint Commission
336 Home Boulevard, Galesburg, IL 61401
CMS-certified lab
Source: CMS CLIA registry (Provider of Services), Q1 2026. Federal public records: active CLIA-certified laboratories near Henderson. A CLIA certificate records only that a laboratory is federally certified — it does not confirm the site performs STD testing, nor its hours, price or access. Inclusion is not an endorsement; always call to verify.
Local clinicians
Beyond dedicated clinics, 53 primary-care, OB-GYN, infectious-disease and other clinicians have a CMS practice record within 30 miles of Henderson. They may be able to evaluate symptoms or order a confidential STD panel during a regular visit, and 5 offer telehealth.
Mark Meeker, MD
Internal medicine · 3375 North Seminary Street, Galesburg
Balakrishna Ravella, MD
Internal medicine · 3375 North Seminary Street, Galesburg
Nikesh Patel, MD
Internal medicine · 3333 North Seminary Street, Galesburg
Yan Liu, MD
Internal medicine · 3315 North Seminary Street, Galesburg
Chad Lampe, MD
Family medicine · 2028 North Seminary Street, Galesburg
Keith Peachey, MD
Family medicine · 834 North Seminary, Galesburg
These are registry-listed clinicians, not dedicated STD-testing clinics. CMS records do not independently verify current licensure, testing services, availability, price, or new-patient status. Confirm each detail before booking. Source: CMS Doctors & Clinicians.
Nearby pharmacies
No pharmacy near Henderson, IL publishes an STD-related service or holds a current CLIA testing certificate, so these are simply the closest. Contact a location directly to confirm counter hours, services, prices, and availability before visiting.
3.1 mi Genoa Healthcare
3.4 miIllinois Cancer Caer
3.7 mi
3.8 mi Hy-Vee Pharmacy #1 (1215)
3.9 miBurgland Drug
4.3 miShowing the 6 closest pharmacies to Henderson, IL.
Directory records identify nearby pharmacies. Service, stock, price, and hours information is shown only when supported by current location-specific evidence.
Prevention & treatment
Testing is one step. For residents of Henderson, telehealth covers the rest: HIV-prevention medication (PrEP) and DoxyPEP to lower future risk, and discreet online treatment if a result comes back positive. All prescribed by licensed U.S. clinicians.
Visit from $0 insured
Telehealth STI treatment and sexual-health care, delivered or to your pharmacy
Visit from $39
Online STI treatment & DoxyPEP: same-day prescriptions to your pharmacy
$0 with most insurance
Free online PrEP & DoxyPEP: HIV prevention, home lab kits, no in-person visit
From $0 insured
Telehealth PrEP & DoxyPEP with at-home testing and ongoing monitoring
Pricing varies by insurance and changes often, confirm on the provider's site. These services are not a substitute for emergency care.
STD stats & rates
How reported STI rates in Knox County, the county that includes Henderson, compare with Illinois and U.S. averages, based on the most recent 2023 surveillance data. An estimated ~20% of residents are aged 15–34 (ACS), the age group with the highest reported chlamydia and gonorrhea rates nationally.
#31 of 102 Illinois counties for chlamydia, a higher rate than 70% of the state
| Infection | Knox County | Illinois | United States |
|---|---|---|---|
| Chlamydia | 332.6 161 cases ▼ 40% | 557.7 | 492.2 |
| Gonorrhea | 82.6 40 cases ▼ 59% | 202.3 | 179.5 |
| Syphilis (P&S) | 4.1 2 cases ▼ 65% | 11.6 | 15.8 |
| Syphilis (early) | — no data | 10.9 | 16 |
| Syphilis (late/unknown) | 20.7 10 cases ▼ 20% | 26 | 29.5 |
Rates per 100,000 population, 2023. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis). Population figures: U.S. Census Bureau ACS. These figures are the latest available surveillance estimates. Bars are scaled to the highest rate shown.
Reading these numbers: reported case rates only count infections that were actually tested for and diagnosed, so they track local screening effort as much as true spread: a higher rate can reflect more testing, a lower one less. Either way, most STIs cause no symptoms, so treat the figures above as context rather than a verdict, and test on the CDC's schedule regardless of how your area looks.
Between 2020 and 2023 in Knox County, chlamydia has fallen from 510.3 to 332.6 per 100,000 (35%), gonorrhea has fallen from 260.2 to 82.6 per 100,000 (68%), and P&S syphilis has fallen from 10 to 4.1 per 100,000 (59%).
The 2020 dip reflects reduced pandemic-era screening, not lower transmission. Source: CDC NCHHSTP AtlasPlus (county, state & U.S., all-ages basis).
Community health context
Sources: CDC PLACES (ZIP), County Health Rankings, CDC/ATSDR SVI, HRSA HPSA, HRSA MUA/P, Neighborhood Atlas ADI. Lower insurance coverage, fewer routine checkups, and a thin primary-care ratio all raise the value of low-cost public clinics and at-home testing in Knox County.
Local HIV snapshot
Knox County HIV care continuum (2022)
Knox County recorded 0 new HIV diagnoses per 100,000 (2022), against 14.7 statewide and 13.7 nationally. Among Knox County residents living with HIV, 79.5% are in care · 76.9% are virally suppressed. Early, routine testing is what moves these numbers: it is the entry point to PrEP, treatment, and viral suppression.
Sources: AIDSVu (Emory/Gilead) · CDC AHEAD · CDC AtlasPlus · CDC NCHHSTP AtlasPlus (county care continuum). The CDC recommends everyone aged 13–64 test for HIV at least once: every lab and clinic listed above offers HIV testing, and free rapid HIV testing is available at a local health department.
Congenital syphilis, passed from parent to baby in pregnancy, is the fastest-rising STI in the country. U.S. cases climbed from 2,163 in 2020 to 3,882 in 2023. It is almost entirely preventable: the CDC recommends a syphilis test at the first prenatal visit, and every clinic and lab listed for Knox County tests for syphilis.
Source: CDC NCHHSTP AtlasPlus, 2023 (county-level congenital syphilis is not published).
Local resources & officials
Data & references
Local context
Lincoln Park sits at the quieter end of Henderson, the kind of place where the same families have owned their homes for decades, and that settled, rooted character runs through the town's numbers too, with most residents owning rather than renting. But owning a home here doesn't automatically translate into easy healthcare access. That logistics reality lands differently depending on your week. With just over half the adult population in the labor force, schedules aren't always nine-to-five, and the households that aren't among the roughly one-in-five earning above six figures may find even a modest clinic fee worth calculating in advance.
Young adults in their late teens and twenties, a meaningful slice of Henderson, are in the years when STI transmission peaks and when people are least likely to prioritize a drive to a clinic without a clear, low-cost reason to go. The $721 median rent suggests that the town's renters, a smaller group than owners, are often working with tighter margins. For them, the fee structures and sliding-scale options listed on this page aren't a minor footnote; knowing which clinic charges what before making the trip out on Chicago-Kansas City Expressway is the practical first step.
Getting there
At 3.86/20 on the EPA walkability index, day-to-day errands in Henderson generally mean driving: plan on a car or rideshare to reach a clinic, and check each listing's hours and phone before you go.
Source: EPA National Walkability Index 2021.
ZIP 61439 snapshot
ZIP-level Census figures for the wider 61439 area around Henderson: a single ZIP can span several communities, so they describe the area, not Henderson alone.
Henderson sits in Knox County, ZIP 61439. Local context that shapes where residents test:
Local landmarks
Major routes
Nearby cities & towns
Just outside Henderson? These nearby communities have their own testing guides: clinics, at-home kits, and free screening close to home.
Reference
Everything to know before you test in Knox County: the CDC's screening guidelines, each infection's detection window, per-test reference prices, and your privacy rights under Illinois law. If you have symptoms right now, our confidential symptom checker maps them to the tests worth considering.
Based on current CDC screening recommendations.
| Group | Tests | How often |
|---|---|---|
| Everyone aged 13–64 | HIV | At least once |
| Sexually active women under 25 | Chlamydia, gonorrhea | Every year |
| Women 25+ with new or multiple partners | Chlamydia, gonorrhea | Every year |
| Pregnant people | HIV, syphilis, hepatitis B & C, chlamydia | Early in pregnancy |
| Gay & bisexual men (MSM) | Chlamydia, gonorrhea, syphilis, HIV | Every 3–6 months |
| Anyone who shares injection equipment | HIV, hepatitis B & C | At least yearly |
| All adults at least once | Hepatitis C | At least once |
Testing too early can return a false negative, confirm timing with a Henderson-area provider.
| Infection | Earliest reliable test | Sample |
|---|---|---|
| Chlamydia | 1–2 weeks | Urine or swab |
| Gonorrhea | 1–2 weeks | Urine or swab |
| Trichomoniasis | 1–4 weeks | Urine or swab |
| HIV (NAT / RNA) | 10–33 days | Blood |
| HIV (4th-gen Ag/Ab) | 18–45 days | Blood |
| HIV (antibody) | 3–12 weeks | Blood / oral |
| Syphilis | 3–6 weeks | Blood |
| Hepatitis B | 3–6 weeks | Blood |
| Hepatitis C | 8–11 weeks | Blood |
| Herpes (HSV) | 4–16 weeks (antibody); swab a sore | Blood / swab |
These are the federal Medicare reference prices for processing each lab test. Public clinics and the community health centers serving Henderson often test free or on a sliding scale; private labs and at-home kits bundle several tests into one fee. Use this as a per-test benchmark before you pay out of pocket, or see the full guide to STD test costs for insurance, free, and at-home options.
| Test | Reference price | CPT / HCPCS |
|---|---|---|
| Chlamydia (NAAT) | $47.80 | 87491 |
| Gonorrhea (NAAT) | $47.80 | 87591 |
| Trichomoniasis (NAAT) | $47.76 | 87661 |
| HIV-1/2 antigen/antibody | $26.87 | 87389 |
| HIV-1/2 antibody | $22.44 | 86703 |
| Syphilis (RPR/VDRL) | $5.61 | 86592 |
| Syphilis (treponemal antibody) | $17.49 | 86780 |
| Herpes (HSV NAAT) | $47.76 | 87529 |
| Hepatitis B surface antigen | $15.33 | 87340 |
| Hepatitis C antibody | $29.16 | 86803 |
Source: Medicare Clinical Laboratory Fee Schedule, CMS, 2025 rates (data.cms.gov). Reference rate for the lab assay only: a clinic visit, sample collection, or a bundled multi-test panel may cost more. Medicaid and most insurers cover STD screening at no out-of-pocket cost.
Two things that actually depend on Illinois law: who can consent, and whether partners can be treated without their own visit. Everything else about testing privately is the same nationwide (see below).
In Illinois, a minor aged 12 or older can consent to confidential STI testing and treatment on their own, no parental permission is required.
Illinois permits Expedited Partner Therapy (EPT): if you test positive for chlamydia or gonorrhea, your provider can give you medication (or a prescription) to pass to your partner, no separate exam or appointment needed for them.
Keeping a test private works the same in every state. Whether an STD test shows on insurance (the EOB), how to test anonymously, and self-pay options that leave no insurance trail don’t change by location.
Learn more about confidential STD testing in IllinoisSource: Guttmacher Institute, Minors' Access to STI Services; CDC, Legal Status of Expedited Partner Therapy. General information, not legal advice.
Good to Know
Answers to the questions people ask most before getting tested.
Possibly, Galesburg, IL is close; compare it by distance against St Mary Medical Center.
Most plans cover STD screening; a clinic or lab can bill insurance, or you can pay a flat self-pay price.
Yes, community and public clinics test the uninsured, with sliding-scale fees.
Local options test for Chlamydia, Gonorrhea, Syphilis, Herpes, Hepatitis A, Hepatitis B, Hepatitis C, Rapid HIV, a full panel covers the common ones.
About 333 cases per 100,000 residents (2023), below the Illinois average.
Lab results typically come back in 1–2 days.
PrEP (HIV-prevention medicine for HIV-negative people) is available locally, any provider can prescribe it.
In Illinois, people under 18 can consent to confidential STD testing and treatment on their own.
HPV and hepatitis B vaccines prevent those infections, ask a provider if you're due.
Yes, rectal symptoms can come from chlamydia or gonorrhea; ask for a rectal swab if you had anal exposure.
Have a different question? Browse the full STD & STI FAQ library, every question we answer, in one place.